text: He has been married twice. The first wife – Nina Vladimirovna Koperina (1900–1986) – is a chemist, she has worked at Moscow State University. Children from the first marriage: Olga (1930–2014) – candidate of chemical sciences; Nikolai (1932–1992) – Doctor of Chemical Sciences, Professor я. The second wife – Vinogradova Marina Anatolyevna (1921–2013) – is a philologist and a writer. Nesmeyanov had two brothers and a sister: Andrey Nesmeyanov (1911–1983) – radiochemist, head of the radiochemistry department of Moscow State University, professor, corresponding member of the Academy of Sciences of the Soviet Union. Vasily Nesmeyanov (1904–1941) – worked as deputy head of the Topographic and Geodetic Service of the Main Directorate of Geodesy and Cartography under the Council of People's Commissars of the USSR. He was shot on July 28, 1941 on charges of espionage. He was rehabilitated on September 17, 1955 by the decision of the Military Collegium of the Supreme Court of the USSR. Tatyana Nesmeyanova (1908–1991).